Antifreeze compound for radiators



Patented Apr. 25, 1933 V UNITED- STATES PATENT- OFFICE OLIVER I. GREENSTBEET, OF OWENSVILLE, MISSOURI mnmnn'zn oomroum: r012. mm'rons 80 Drawing.

nated to thus raise theflash point of the kerosene, with which kerosene oil of mir- 1 bane had been mixed for the-purpose of preventing the kerosene from boiling, the oil of mirbane acting to render the boiling point ofthe kerosene veryhigh or approxi-,

mately 322 F.

a! The mixture of kerosene from which the lighter fractions had been removed and oil mirbane constituted a very efiective antifreeze liquid to be placed in radiators but if there was any water left in the radiator when this mixture was placed therein, the water would not mix with the kerosene and oil of mirbane and this water flowing over the hot engine head would readily boil.

Also this water would freeze on cold days. While it was designed that every bit of.

water should be drawn from the radiator, in the maJority of cases, some water was left which resulted in the above named conditions.

= It was necessary then to provide means whereby any water left in the radiator should mix with the kerosene and oil of .mirbane. To that end, it was necessary to provide an emulsifier causing the oilof mir bane and kerosene to absorb some water and ca any excess water to mix with the oil of mir ane and kerosene while the engine was However, this would not prevent any-excess water from freezing when the engine was stopped on a cold'day. It was, therefore, necessary to add glycerine to a i the emulsifier. Glyoerine would mix with the excess water,-but not with the kerosene and oil of mirbane. V There is still another dlfiiculty, however,

. Application filed June 25,

1931. serial- No. 546,925.

found in' the use of this anti-freezing compound, namely leakage. The kerosene and oil of mirbane cuts rust andv corrosion and when thecompound is used in old cars, especially when the rust is cut loose, a leak would appear. Therefore, it is necessary to add an anti-leak powder to prevent this.

The present invention has for its-object, therefore, the production of a compound which may be either initially mixed with kerosene and oil of mirbane or which may be added to kerosene by the car operator, thus permitting kerosene to be used in a radiator eventhough all of the water has not been drained out of the radiator and producing I when so added an anti-freeze'mixture having a very high boiling point which will not freeze except at excessively low temperatures, which will cause an emulsification of any water remaining in the radiator, which will prevent this water. from freezing, and which will stop any leaks caused by the action of the kerosene in cutting the rust and corrosion, this mixture furthermore lessening the solvent effect of the mixture on rubber.

'In initially preparing a. complete antifreeze liquid, I use petroleum in the form of coal oil or kerosene to which is added oil of mirbane (mono-nitro-benzine, C H NO the kerosene being heated ,to eliminate the lighter and more volatile fractions and-thus raise the flash point of the kerosene. In otherwords, I boil away the lower fractions of the kerosene and use the-higher boiling kerosene'fraction. By adding the proper quantity of oil of mirbane, I can raise or lower, the boiling and freezing range of the liquid and preferably I use a mixture that will not freeze until 43 -F. has been reached and which cannot boil until 322 F. has been reached. V

While I do not wish to be limited to any particular proportion of the oil of mirbane relative to the kerosene, I preferably use one part of oil of mirbane to sixty-four parts of kerosene.

After preparing the mixture of'oil of mirbane and kerosene, I add to this mixture an emulsifier. Preferably as an emulsifier, I 00 use sulphonated bitumen. Preferably, I will glycerine, flax seed and zinc oxide. The.

zinc oxide and flax seed are used as a leak stopper, the ground flax seed acting as a carrier of the zinc oxide.

While I have heretofore described the mixing of oil of mirbane, the emulsifier, flax seed and zinc oxide together to form a complete anti-freezing compound, I do not wish to be limited to these steps inasmuch as I contemplate the production of what may be termed a partial anti-freezing compound which may be added to kerosene by the car operator himself.

Under these circumstances, the following compound is used, namely :sulphonated bi.- tumen, as an emulsifier, six ounces, glycerine, three ounces, oil of mirbane six ounces, flax seed, one-half ounce, and zinc oxide, onehalf ounce. These several ingredients are mixed together and put up in a can or tube and preferably in the form of a paste. This mixture is to be added to a radiator that is filled with kerosene. Sixteen ounces of this paste or semi-liquid will take care of three gallons of kerosene. 1

It is to be understood, of course, that these proportions might be changed at least within the following range, of proportions, namely;

Oil of mirbane "Four to eight ounces Sulphonated bitumen Four to eight ounces Glycerine. Two to four ounces Flax seed One-quarter to one ounce Zinc oxide One-quarter to one ounce It will be understood that the sulphonated bitumen acts as an emulsifier to emulsify any water which may remain in the radiator, that the glycerine prevents any water from freezing, that the oil of mirbane very greatly increases the boiling range of kerosene,

that the flax seed acts as a carrier for the zinc oxide. The flax seed will readily circulate with the oil of mirbane and kerosene when the motor is started and carries the zinc oxide to the leak and holds itthere until the zinc oxide becomes hard on the outside of the leak. The zinc oxide becomes hard when the air hits it, but it remains soft in the liquid itself. This mixture has been carefully tested and is entirely satisfactory. While this mixture'will ordinarily be put up in the form of aste, yet it may be rendered liquid by ad ing thereto a little kerosene. I reiterate that this mixture of sulphonated bitumen, oil of mirbane, glycerine, zinc oxide and flax seed may be put up separately for use with kerosene or that the combination of kerosene, oil of mirbane, glycerine, the emulsifier, flax'seed and zinc oxide may be put up for sale as a complete antifreezing mixture.

It will be understood that this mixture through the absorption and mixing of water with the complete mixture, the disturbance caused by the presence of the water, under heat, does not begin until the temperature arrives at 212 F., whereas if there was no emulsifying agent, such as sulphonated bitumen, there would be a disturbance at 180 F. It is very essential that this point of disturbance caused by the presence of water he raised from 180 to 212 in order that the motor may function properly with this mixture as a cooling agent.

I claim 1. An anti-freezing mixture consisting approximately of kerosene three gallons, oil

of mirbane six ounces, sulphonated bitumen six ounces, glycerine three ounces, flax seed one-half ounce, and ,zinc oxide one-half ounce.

2. A compound of the character described,

consisting of sulphonated bitumen four to eight ounces, glycerine two to four ounces, oil of mirbane four to eight ounces, flax seed one quarter to one ounce, and zinc oxide one quarter to one ounce.

- 3. An anti-freezing mixture consisting of kerosene three gallons, oil of mirbane from four to eight ounces, sulphonated bitumen from four to eight ounces, glycerine from two to four ounces, flax seed from one quarter of anounce to one ounce and zinc oxide from one quarter to one ounce.

. 4. An anti-freezing mixture for ,use in radiators of automobiles comprising kero-' sene from which the higher boiling point fractions have been eliminated, oil of mirbane and an emulsifier of a character to emulsify water with oil such as sulphonated .bitumen or its equivalent.

quarter to one ounce, and zinc oxide from 1 one-quarter to one ounce.

In testimony whereof I hereunto aflix my signature.

OLIVER P. GREENSTREET. 

